Hello! I just have a roll of Forte (Fortepan?) ASA 100 in my Pentacon Six. I remember the box said "new", so it is the last emulsion (shortly before they get teared down). I wish to make some night exposures (illuminated church and statues) stopped down somewhere between f8 and f16. I expect a couple of measured exposure. How much I need to expose for the Schwarzschild effect? Unfortunately I can't find any tehnical papers for Forte. Maybe a table whit different reciprocity failure of films would be of some help too.